Influence of Yeast (Saccharomyces Cerevisiae as Yea-Sacc or Levaferm) on in Sacco Dry Matter Degradability and Ruminal Parameters of Variously Fed Small Ruminants

Abstract

Two series of experiments with rumen fistulated castrated male sheep and goats were carried out. In experiment I three sheep each consumed rations rich in concentrate (700 g concentrate, 200 g chopped wheat straw) or roughage (700 g artificially dried ryegrass, 200 g chopped wheat straw per animal per day) and supplemented with 0, 1, 2 or 4 g Yea-Sacc (Saccharomyces cerevisiae; USA) per sheep per day. In experiment II three sheep were fed with 1000 g artificially dried ryegrass and 200 g concentrate, three goats consumed 750 g ryegrass and 150 g concentrate. 0, 0.5, 1 or 2 g Levaferm (Saccharomyces cerevisiae; Germany) per animal per day were added. Rations of all animals were supplemented with minerals and vitamins. After 14 days of feeding wheat straw, ammonia treated wheat straw and artificially dried grass (exp. I) or wheat straw and artificially dried grass (exp. II) were incubated in nylon bags in the rumen for 6, 12, 24, 48 and 72 hours. At the end of the experiments rumen fluid was taken via cannulae and parameters of rumen fermentation were measured. Higher levels of added Yea-Sacc decreased in sacco dry matter degradability of all incubated feeds. Depression was much higher if Yea-Sacc was added to the concentrate ration (overall mean for 24, 48 and 72 h incubation time: 55.1, 47.1, 46.1 and 44.5 for 0, 1, 2 and 4 g Yea-Sacc) than to the roughage diet (58.7, 56.3, 55.0 and 54.1%). Levaferm did not significantly influence the rumen dry matter degradability of incubated feeds (overall mean for 24, 48, and 72 h incubation time: 64.0; 64.9; 64.9 and 64.2% for sheep; 63.0; 63.2; 63.2 and 61.6% for goats, if added with 0, 0.5, 1 and 2 g Levaferm per animal per day). Rumen pH, concentration of volatile fatty acids and molar concentration of fatty acids in rumen fluid were not significantly influenced by added yeasts. More research seems necessary to find out the mode of action of yeast and to quantify and to reproduce the effects of added yeast.

Influence ofSaccharomyces cerevisiaeDose on Ruminal Fermentation and Digestion in Sheep Fed a Corn Stover Diet

“…Total tract digestibility of DM, OM, CP, NDF and ADF were not affected by Saccha,roriiyces cereoisiae, which agrees with some reports (Flachowsky et al, 1992;Avendaiio et al, 1995;Angeles ct ad., 1998). However, i n o t h e r e x p e r i m e n t s , i i i L :~L I O o r iii sitii N D F digestibility of low quality forages has been increased by yeast culture (Ayala et al, 1992;Roa et aL, 1997).…”

“…Directfed microbial products with Saccharoiuyces eel-euisiae have been used to improve digestion in ruminants fed low quality diets (Ayala et al, 1992;Roa et al, 1997). However, in studies with sheep, doses have varied from 0.5 to 4 g/ d (Ayala et al, 1992;Flachowsky et al, 1992) with inconsistent results.…”

Einfluss verschiedener Probiotika (Bacillus cereus u. Saccharomyces cerevisiae) auf den in sacco Abbau und die Verdaulichkeit bei Schafen sowie die Mast- und Schlachtleistung von Jungbullen

“…DAWSON et al, 1990;PIVA et al, 1993) bzw. in in vivo-Versuchen beobachten (ADAMS et al, 1981DAWSON und NEWMAN, 1987;CHADEMANA und OFFER, 1990;FLACHOWSKY et al, 1992). KUMAR et al (1994) Vorschriften 4.1.1, 5.1.2, 6.1.4, 8.1, 1976) gegenüber der Kontrolle (77,1%, P> 0,05) und der Bacillus cereus -Gruppe (75,0%, P> 0,05).…”